Taking pets on vacation is a growing trend, but there are certain restrictions when it comes to taking pets on cruises. One of the most popular cruise lines, Royal Caribbean, does not allow dogs on their cruises, with the exception of service animals. This is because dogs can be a disturbance to other passengers and can pose a health risk.
There are a few other cruise lines that do allow dogs, but there are usually strict restrictions on the size and breed of dog that is allowed. For example, Disney Cruise Line only allows small dogs that are under 25 pounds.